EP1807233B1 - Schaftfräser mit wendelnuten und eine mehrere abschnitte aufweisende schneidkante - Google Patents

Schaftfräser mit wendelnuten und eine mehrere abschnitte aufweisende schneidkante Download PDF

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Publication number
EP1807233B1
EP1807233B1 EP05796034A EP05796034A EP1807233B1 EP 1807233 B1 EP1807233 B1 EP 1807233B1 EP 05796034 A EP05796034 A EP 05796034A EP 05796034 A EP05796034 A EP 05796034A EP 1807233 B1 EP1807233 B1 EP 1807233B1
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EP
European Patent Office
Prior art keywords
section
end mill
helical
cutting
cutting edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05796034A
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English (en)
French (fr)
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EP1807233A1 (de
Inventor
Clifford M. Flynn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berkshire Precision Tool LLC
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Berkshire Precision Tool LLC
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Publication date
Application filed by Berkshire Precision Tool LLC filed Critical Berkshire Precision Tool LLC
Publication of EP1807233A1 publication Critical patent/EP1807233A1/de
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/04—Angles
    • B23C2210/0485—Helix angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/04—Angles
    • B23C2210/0485—Helix angles
    • B23C2210/0492—Helix angles different
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1946—Face or end mill
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1952—Having peripherally spaced teeth
    • Y10T407/196—Varying in cutting edge profile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1952—Having peripherally spaced teeth
    • Y10T407/1962—Specified tooth shape or spacing
    • Y10T407/1964—Arcuate cutting edge
    • Y10T407/1966—Helical tooth

Definitions

  • Fig. 4 is a diagram illustrating the cutting edges of a three-flute end mill according to the present invention. Each diagram shows all three cutting edges having a first cutting edge portion disposed at a first constant helix angle (HA1), and a second cutting edge portion disposed at a second constant helix angle (HA2), and an arcuate transition section (T1) connecting the portion.
  • the cutting edges are equally indexed around the circumference of the end mill, spaced apart from one another by a distance A.
  • FIG. 14 is a diagrammatic exploded perspective view of an end mill and a work piece illustrating a pair of chips being formed
  • FIG. 16 is a. diagrammatic partial view of a cutting tooth.
  • the cutting surface 28 includes a first section 36, a second section 38, and a take-off peak 40 disposed between the first section 36 and second section 38.
  • the first section 36 of the cutting surface 28 has a curvature that at least substantially follows a first radius.
  • the second section 38 of the cutting surface 28 has a curvature that at least substantially follows a second radius.
  • the take-off peak 40 is the point of intersection between the first section 36 and the second section 38.
  • the first and second sections 36,38 are not limited to circular shapes, and may follow a non-circular arcuate path. Hence, the description that each section substantially follows a radius.
  • the second section 38 terminates approximately at the inflection point 42 of the flute curvature.

Claims (8)

  1. Fräser bzw. Schaftfräser (10) mit einer Rotationsachse (16), aufweisend:
    einen Schaftabschnitt (12), der sich entlang der Rotationsachse (16) erstreckt;
    einen gerillten Abschnitt (14), der sich entlang der Rotationsachse (16) erstreckt, mit einem ersten integral bzw. einstückig an dem Schaftabschnitt (12) angebrachten Ende, einem zweiten Ende (22) und einer äußeren Oberfläche (14); und
    einen oder mehrere schneckenförmige Zähne-(26), die entlang der äußeren Oberfläche (24) des gerillten Abschnitts (14) angeordnet sind, wobei jeder schneckenförmige Zahn (26) eine Schneide- bzw. Schnittoberfläche (28) und eine Aussparungs- bzw. Reliefwand (30) aufweist, die sich unter Bildung eines eine schneckenförmige Schneide- bzw. Schnittkante (32) definierenden Winkels schneiden;
    dadurch gekennzeichnet, dass:
    die Schnittoberfläche (28) eines jeden schneckenförmigen Zahns (26) einen ersten Abschnitt (36), einen zweiten Abschnitt (38) und eine zwischen dem ersten Abschnitt (36) und dem zweiten Abschnitt (38) angeordnete Abnahmespitze (40) beinhaltet; und
    die Schnittkante (32) eines jeden schneckenförmigen Zahns (26) einen ersten Abschnitt (44) mit einem konstanten ersten Schneckenwinkel (HA1), einen zweiten Abschnitt (46) mit einem konstanten zweiten Schneckenwinkel (HA2), der ungleich dem ersten Schneckenwinkel (HA1) ist, und einen gebogenen bzw. kurvenförmigen Übergangsabschnitt (48), der den ersten Abschnitt (44) und den zweiten Abschnitt (46) verbindet, beinhaltet.
  2. Fräser (10) nach Anspruch 1, bei dem die konstanten ersten Winkel (HA1) von wenigstens zwei der schneckenförmigen Zähne (26) zueinander unterschiedlich sind.
  3. Fräser (10) nach Anspruch 1 oder 2, bei dem die konstanten zweiten Winkel (HA2) von wenigstens zwei der schneckenförmigen Zähne (26) unterschiedlich zueinander sind.
  4. Fräser nach einem der Ansprüche 1 bis 3, bei dem der gebogene Übergangsabschnitt (46) eines jeden der einen oder mehreren schneckenförmigen Zähne (26) eine Länge (TL) und einen Radius (TR) aufweist.
  5. Fräser (10) nach einem der Ansprüche 1 bis 3, wobei der Fräser eine Anzahl schneckenförmiger Zähne (26) aufweist, und wobei der gebogene Übergangsabschnitt (48) eines jeden aus der Anzahl schneckenförmiger Zähne (26) eine Länge (TL) und einen Radius (TR) aufweist.
  6. Fräser (10) nach Anspruch 5, wobei die Radien (TR) der gebogenen Übergangsabschnitte (48) von wenigstens zwei aus der Anzahl schneckenförmiger Zähne (26) zueinander unterschiedlich sind.
  7. Fräser nach Anspruch 5 oder 6, bei dem die Länge der gebogenen Übergangsabschnitte (48) von wenigstens zwei aus der Anzahl schneckenförmiger Zähne (26) zueinander unterschiedlich sind.
  8. Fräser (10) nach einem der Ansprüche 1 bis 7, bei dem die schneckenförmigen Zähne (26) wenigstens einen ersten schneckenförmigen Zahn (26a) und einen zweiten schneckenförmigen Zahn (26b) beinhalten, die durch eine erste Rapportdistanz (A) und eine zweite Rapportdistanz (B) voneinander beanstandet sind, und die erste Raportdistanz (A) größer als die zweite Raportdistanz (B) ist.
EP05796034A 2004-09-01 2005-08-30 Schaftfräser mit wendelnuten und eine mehrere abschnitte aufweisende schneidkante Active EP1807233B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/931,733 US7223053B2 (en) 2004-09-01 2004-09-01 Helical flute end mill with multi-section cutting edge
PCT/US2005/031077 WO2006028887A1 (en) 2004-09-01 2005-08-30 Helical flute end mill with multi-section cutting edge

Publications (2)

Publication Number Publication Date
EP1807233A1 EP1807233A1 (de) 2007-07-18
EP1807233B1 true EP1807233B1 (de) 2009-10-14

Family

ID=35478389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05796034A Active EP1807233B1 (de) 2004-09-01 2005-08-30 Schaftfräser mit wendelnuten und eine mehrere abschnitte aufweisende schneidkante

Country Status (9)

Country Link
US (1) US7223053B2 (de)
EP (1) EP1807233B1 (de)
JP (1) JP2008511465A (de)
AT (1) ATE445472T1 (de)
AU (1) AU2005282744B2 (de)
CA (1) CA2578787C (de)
DE (1) DE602005017175D1 (de)
ES (1) ES2330954T3 (de)
WO (1) WO2006028887A1 (de)

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CN107073603B (zh) * 2014-10-24 2019-05-03 京瓷株式会社 立铣刀
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CN109317738A (zh) * 2018-10-30 2019-02-12 浙江神钢赛欧科技有限公司 前波刃开槽刀
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Also Published As

Publication number Publication date
DE602005017175D1 (de) 2009-11-26
US20060045637A1 (en) 2006-03-02
CA2578787A1 (en) 2006-03-16
AU2005282744A1 (en) 2006-03-16
CA2578787C (en) 2010-01-26
ATE445472T1 (de) 2009-10-15
ES2330954T3 (es) 2009-12-17
US7223053B2 (en) 2007-05-29
AU2005282744B2 (en) 2008-12-18
WO2006028887A1 (en) 2006-03-16
JP2008511465A (ja) 2008-04-17
EP1807233A1 (de) 2007-07-18

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